Alloy



V UNITED STAT-ES DANIEL OHARA, DANIEL W.

PATE T OFFICE.

" ALLOY. l

sPEcfi-IcAa'ioN forming part of LettersuPatent in. 385,955. dated July 10, 1888.

' Application filed March 2, 1888. Serial No. 265.935. (No specimens.)

To all. whom iFmay'wncern: Be it known that we, DANIEL O HARA, DAN-1 IEL W. ELDREDGE,'3D(1 J oH LOGAN, of Walthem, in the cbunty'ofMiddlesex and State of Massachusetts, have invented certain new and useful Improvements. iii-Alloys, ofwhich the following is a specification.

Our-in venti-on hasfor its object to provide an alloy orfcompound metal which shall be practiin callynon'-magneticfinoxidizable,-andwill have a suitable coeflic ie'nt of expansion to' adaptit' for use as a. material for one of the parts of the rim of a compensation-balance for watches or chronometers. Y

Our improved alloy consists of a compound of silver, zinc,'ti n-, lead, arsenic, and cadmium in about the following prop0rtions, viz:;si1- ver, sixty (60,) parts; 'zinc, thirty-five (35) to sixty (60) parts; tin, four and one-half (4i) 20' parts; lead, three and,one-hazlf (3 l) parts; arsenic, onefhalf partjcadniium, one andonehalf (1%) part.

.W do notlimitourselvesto the exact pro-f I' rnary, A. D. 1888.

l portions of silver, tin, lead, arsenic, and cadmium above specified, but may vary the same 25 within reasonablelimits without departing from the spirit of our invention.

We elaim' v a An alloy or compound metal composed of silver, zinc, tin, lead, arsenic, and cadmium, 30 .in substantially the following proportions, viz: silver, sixty.parts;'zin'c, from thirty-five to sixty parts; tin, four andone-half parts; lead, three and one-half parts; arsenic, one-. halfp'art, and cadmium,on'e and one-half part.. In testimony whereof we have signed our Y namesto this specification, in the presence 'of two subscribing witnesses; this 28th day of Feb I DANIEL OHARA. I

DANIEL W. ELDREDGE. JOHN LOGAN.

Witnesses:- I .HENRY N. FISHER, 1; 1 EDWARD A. MARSH. 

